Key controller



Dec. 13,1927.

A. A. EGLl KEY coNThoLLER Filed Juiy 28, 1925 Fig.

Patented Dec. 13, 1927.

UNI-TED STATES PA ARNOLD AUGUST EGLI, or BERN, SWITZERLAND, nssieivon, BY MESNE ASSIGNMENTS, co, AKT'IENGESELLSCHAFT, or SCHAEFHAUSEN,

'10' CHOGOLAT TOIBLAR HOLDING- SWITZERLAND.

Application filed July 28, 1323, Serial No.

The invention relates to key controllers and more particularly to controllers of this kind for writing machines orthe like. The object of the invention is toenable the pressure to be reduced that has to .be' applied to a key in operating such machines. 7 This is accomplished by associating with the parts (which otherwise-would have to be moved by *the force applied to the de 'ressible keys) a cam which is caused by epression of the key to be engaged by a power device, suchas a continually revolving cylinder or drum, soas 'to be operated thereby. A feature of the invention consists in the cam and its detain-- ing means beingarrange'd so that the cam is stopped whenever it has'performed the operations assi ed to it and is then held station.- ary eveni the key by which it was; caused to engage with the powerdevice is-kept depressed or in anoff normal position. An;- other feature of the lnvention cons sts 1n or striker moved by the key and kept pressed against the cam by a spring. y

The invention is shown by way of example in the drawing in which Fig.-1 is a vertical section showing a key with its associated parts and the power transmitting drum,

Fig, 2 is a plan view of a key accordingto F1g.1and Fig. 3 shows a combination of twoarrangements according to Fig. 1.

In the drawing, 1 is a key in the form of,

v a bell cranklever-linked to a striker 2 whose one end is attached to a spring 3, while the other end is opposite to a detent 4-. The de tent 4 is in the shape of. a pawl which engages a tooth of the cam5 associated with the striker 2., so that the cam 5- is normally prevented from rotating in the direction -.of

the arrow a. The striker 2is' provided with; a projection 1'2 which is adapted to. drop into a recess 11 in the cam 5. In the normal osi-tion of the striker shown in Fig. 1 n full lines the projection 12 lies at a, certam (115- 1,652,430 TENT "cruc a KEY CQNTROLLER.

654,459, and in Germany February 3, 1923.

t ance fromthe right hand: end of' the re cess 11.. Adjacent to the cams 5 isa-motordriven continually-revolving ,roll. or c lin-- der 6 which turns in the direction o -'the arrow as indicated in Fig. 1. 7 is a forkshaped end of an operable memberor bar 8 which is equipped with members that are adapted'to prepare or determine the action of subsequently operated devices; for ex ample the operable member" may he a part of a register for registering ori'determining the movements of typeba'rs arranged in a.

movable magazine from which 'the-typebars' -may be protruded for the purpose of forming a line of type. When the key. 1 is de' pressed the striker 2 is swung to the right so that first the detent 4' is swung away from caused to apply pressure to the forkshaped head.7 of th'e'operable member or' bar 8 so as to move the latter in the direction .of the arrow 1?). As long as key 1 is held de- .means of its projection 12 an'impulse to the pressed,- it retains the striker 2 in raised position as shown in dot and dash lines in Figure 1. In this position, said striker doesnot interfere with the return movement of detent i. When the cam 5 has executed a full turn its motion is arrested by thedetent 4 which 'is' urged towards the cam-by an adjust'able' sprlng 9.v The striker remains in the position indicated by dash and dot lines,

in which position the detent4 is out of the, path of the striker 2 sothat the latter cannot aifect "the detent again until the key has been allowed-to return to its normal position.

the spring 3 urges the striker 2 against thecam 5 and restores the key '1' to its normal position.

I When the key 1 is released by the operator,- I

' In Fig. 3 two continually rotating cylinders 6 are shown which impart motion to cams controlled'by two groups of keys each 00%1PIlSi-l'lg threelor fourv rows. 1

I claim:' '-1. In .a key-controlled machinea power-i driven roller on a first axis, a pl operable members, fOIfGROhsaid operable member a cam revoluble round a second axis urality of and adapted toftran'sfer' a movement from transferring a movement from the power and for imparting an initial rotaryv the power-driven roller to-- an operable memher, a detent for keeping a said cam in a normal position, and keyope1atedinea1is for transitorily disengaging the detent from said cam and permitting it to stop the said cam after a full revolution of the cam in its normal position while the key is de-- pressed.

2. In a key-controlled machine, a powerdriven roller, an operable member, a'cam' adapted to be engaged by the said roller and to transfer a movement from the poweradapted to be engaged by thesa'i'd roller and to transferamovement from thepower driven roller to an operable member, a detent for keeping a cam in a normal position, and key-operatedmeans for transitorily disengaging the detent from-said cam and permitting it to reengage thesaid cam in its normalpositionwhile the key is depressed moveby the power driven roller; 1

, 4. In a key-controlled. machine, a. powerdriven'roller on a first axis, a plurality of operable members, for each said operable ment to said cam before'it is engaged member a cam revoluble round a second axis I andadapted to transfer a'movement from 'the power-driven roller to an operable mem-v ber, an arresting means 'in a said cam, a spring-pressed detent with a stopping member adapted for engagin with the arresting means, and key-operate means for t'ransi: torily disengaging the said detent from said cam .and permitting to stop the said cam after a full revolution'of the cam in its nor:

mal position while the key is depressed.

5. In a key controlled .machine, a power driven roller, an operable member, a cam for transferring a movement from the power driven roller to the operable member, a detent-ior'keepmg -the'cam in a normal posi- 1 tion, a key operated means for transitorily and, then impart an disengaging'the detent from said cam and for imparting an initial rotar'y movement to saidcam before it is engagedby the power driven roller, the said key operated means permitting thedetent to-reengage the said cam in itsnormal position'and adapted to stly disengage the detent-from the cam initial movement to the cam.

6'. In a' key-controlledmachine, a power driven roller, an operable member, a cam for a bers, for each said operable member a cam ment from driven roller to the operable member, a detent for keeping a cam in a normal position, and key-operated means for transitorily disengaging the detent from said cam and permitting the detent to reengage, the said cam 7 In a key-controlled machine, a power-- driven roller on a first axis, a plurality of operable members, for each said member a cam revoluble round a second axis and adapted to transfer a movement frbm the power-driven roller to an operable member, for each cam a spring-operated detent for keeping the cam in its normal position, and key-operated striker for transitorily disengaging a detent "from acam and permitting the detent to stop the said cam after a full revolution ofthe cam while the key is depressed.

8. Ina key-contro1led machine, a owerdriven roller on a first axis, a plura ity of operable members, foreach said member a camrevoluble around a second axis and adapted to transfer'a movement from the said roller to anoperable member, springoperated detents for keeping the cams in normal positions, a striker linked to a key,

adapted for transitor'ily disengaging a detent from a cam and permitting the detent to stop the said cam after a full revolution of the cam while the key is depressed, and a spring for urging the striker against the cam.

9. In a key controlled machine, a power driven roller, operable members, for each the detent to reengage the said 10. In a key-controlled machine, a pluralityof power-driven rollers, operable members, for each roller a cam ada ted to be engaged byits roller and to trans er a movethe said roller to an operable member, adetent for keeping a cam in 9. normal position, means for disengaging the said detent, and a key-operated stri er adapted to engage the said cam on its circumference for imparting an initial rotar movement to said cam before it is engaged y said power driven roller.

11. In a key-controlled machine, a plurality of power-driven rollers, operable memoperable member inits bers, i'oreach said member a cam for'tr ansferring a movement from a said powerdriven roller to an operable member, the

said cam and roller being revoluble around difi'erent axes, a detent for keeping the said cam in a normal position, and key-operated means for transitorily disengaging the said detent from the said cam and permitting the detent to stop the said cam after a full revolution of the cam in its normal position while the keyis depressed.

12. Ina key-controlled machine, rality of power-driven rollers, bers, for each roller a cam a pluoperable memadapted to be engaged by its roller and to transfer a move-j ment from the said roller to an operable member,.a detent for keeping a cam in a normal position, means fordlsengaging the said detent, and a key-operated striker for imparting an initial rotary movement'to said cam before it is engaged by asaid power driven'roller the said striker being adapted to act substantially in its longitudinal direction.

while the key is depressed after the cam has transferred the movement to the said normal position, the said detent being normally out of-operative connection withthe keyoperated means.

15. In a key-controlled machine, a owerdriven roller on a first. axis, operable members, for each member a cam revoluble round a second axis and adapted to transfer a movement from a plura ity of the power-drivenroller to an operable meman arresting means m -a said cam, a

ber spring-pressed detent with a stopping member adapted forengaging with the arresting means, and key-operate means fox-transitorilydisengaging the said detent from said caln an permlttmg 'it'to stop the said cam whlle thekey is depressed after the cam 'driven roller on a first axis,

- operated detents for keepin 'diEerent axes, a detent for -cam in a normal position,

said operable has transferred the movement to the said operable member in its normal position, the said detent being normally out of operative connection with the key operated means.

16. In a key-controlled machine, a powera plurality of operable members, for each said member a cam revoluble round a second axis and adapted to transfer a movement from the poWer-driven roller to an operable member, or each cam a spring-operated detent for eeping the cam in its normal position, and

a key-operated striker for transitorily'disengaging a detent from a cam and permitting the detent to stop the said cam while the key is depressed after the cam has transferred the movement to the said operable member, the said detent being normally out of operative connection with the key operated means.

17. In a key-controlled machine, driven roller on a first axis, a plurality of operable members, for each said member a cam revoluble around'a second axis and adapted to'transfera' movement from thesaid roller to an operable member, springthe cams 1n normal positions, a striker ed to a key,

a poweradapted. for transitorily disengaginga'detent from a. cam and permitting the detent to stop the said cam while-the key is depressed after the cam has transferred the movement to the said operable member, and a spring for urging the striker agalnst the" cam. 1

18. Ina key-controlled machine, ralit of power-driven rollers, bers, for each said member a cam for transferring a movement from a said powerdriven roller to an operable member, the said cam and roller being revoluble around keeping the said and key-operated a plumeans for transitorily detent from the said cam while the key is depressed and permitting thedetent to stop] the said cam after the cam has transferred the movement to the said operable member in its normal position while the key is depressed, the said detent being normally out of 'operative connection with the key operated means.

operable memdisengaging the said I In testimon whereof I have aflixed my signature;

ARNOLD AUGUST EGLI."

GERTIFICATE 01 CORRECTION.

Patent No. 1,652,430. Granted December 13, 1927, to ARNOLD AUGUST new.

It is hereby certified that the name of the essigneein the above numbered patent should'have been written and printed as "Uhocolat Tobier Holding (10.,

Aktiengesellschaft", instead of "Ghocoiat Tobla'r Holding (10., 'Aktiengeselischaft", as shown by the records of assignment in'this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office. Signed andsealed this 31st day of January, A. D. 1928.

M. J Moore,

Seal. Acting Commissioner of Patents-.- 

